Republic day easter egg I had put on flipkart.com homepage. Not the best of the code, FPS could be improved, objects could be reused to avoid garbage collection.
Demo: http://aakashbapna.github.io/jet-planes/index.html
doodle.init("jet.png");
doodle.destroy() to destroy.
formation.addPlane(x, y, "r, g, b") to add another plane to formation at x,y coordinate with r,g,b smoke